Development trend and challenge of advanced high strength automobile steels
WANG Cun-yu1， YANG Jie2， CHANG Ying3， CAO Wen-quan1， DONG Han1，4
（1. Institute for Special Steels,Central Iron and Steel Research Institute,Beijing 100081,China;2. China Auto Lightweight Technology Innovation Strategic Alliance,Society of Automotive Engineers of China,Beijing 100055，China;3. School of Automotive Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China;4. School of Material Science and Engineering， Shanghai University， Shanghai 200444， China）
Abstract：High strength steel is still the main material of automobiles，and has certain advantages and potentials in light weight，energy saving，emission reduction and cost for automobiles. The use ratio of high strength steel increases year by year and develops towards higher strength. Lower cost are important developing trend，the low cost production modes mainly reflected in hot rolling instead of cold rolling to produce sheet steel，and cold forming instead of hot stamping to produce ultra-high strength automobile parts，and so on. The third generation automobile steel，which relies on the metastable austenite enhancing strength and ductility，has become important development trends of advanced high strength steel. The development of advanced automobile steels bring new challenges to the material science，processing and equipment.
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WANG Cun-yu1， YANG Jie2， CHANG Ying3， CAO Wen-quan1， DONG Han1，4. Development trend and challenge of advanced high strength automobile steels. Iron and Steel, 2019, 54(2): 1-6.
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